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PavelBruj is currently offline PavelBruj

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IP: 77.236.196.59
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Hello all,

we are using Kerio 9.2 in our company. Once we are using BlackBerry phones, push notifications going well. No delay in delivery of emails. When I switch to iPhone SE I noticed delay. Sometimes the delay is horrible - 45 minutes for example. Of course push notification enable on iPhone.

Is there something wrong with iPhone devices or somethong special in septup in Kerio?

What about Android phones? Any experience with push notifications?

Thanks for your answer.

Pavel
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freakinvibe is currently offline freakinvibe

Messages: 1560
IP: 178.197.239.110
Karma: 63
Are you using ActiveSync or IMAP to connect to Kerio Connect?

If you use ActiveSync, it will push new messages instantly to your phone.

On the iPhones, there is an issue: If the mail app is in the background for a certain amount of time, or not started at all, it will not receive push notifications. You would then need to use Apple's APN Service:

https://en.wikipedia.org/wiki/Apple_Push_Notification_Servic e

With the Blackberries, the email app is always open (Blackberry Hub), so they get push notifications all the time.

For Android, ActiveSync push should work all the time.

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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PavelBruj is currently offline PavelBruj

Messages: 21
IP: 77.236.196.59
Karma: 2
Hello,

many thanks!

We are using ActiveSync.

How I shoul install and use Apple's APN Service, please?

Thanks for the update.

Pavel
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freakinvibe is currently offline freakinvibe

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IP: 178.197.239.110
Karma: 63
Kerio Connect does not use the Apple APN infrastructure, so you can't really use it.


Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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Pavel Dobry (Kerio) is currently offline Pavel Dobry (Kerio)

Messages: 5245
IP: 195.113.184.10
Karma: 251
freakinvibe wrote on Mon, 30 January 2017 14:59
Kerio Connect does not use the Apple APN infrastructure, so you can't really use it.



Yes, it does. For Apple IMAP, CalDAV and CardDAV clients (both iOS and OS X). Push uses Apple's APN.
For Exchange ActiveSync, the client creates a permanent keep-alive connection to the server.
  •  
freakinvibe is currently offline freakinvibe

Messages: 1560
IP: 178.197.239.110
Karma: 63
OK, sorry, I did not look at IMAP.

With ActiveSync you have the problem that the permanent keep-alive connection does not work anymore if the Mail app is in the background for a certain amount of time.

This is not a Kerio issue, it's how iOS handles apps. You have the same problem with Exchange.

A solution might be to use an MDM solution that supports APN.

Or you switch from ActiveSync to IMAP as Pavel Dobry points out.

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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PavelBruj is currently offline PavelBruj

Messages: 21
IP: 46.254.70.221
Karma: 2
Hi guys,

today IMAP solution completely stop working. Push notification is not working anymore.

Do you have any idea what happened?

Thanks Pavel
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12Sync_de is currently offline 12Sync_de

Messages: 16

IP: 80.152.52.197
Karma: 0
Hi,

exactly same Problem here!

iOS IMAP Mail Push stoped working on 7 or 8th of September 17.

Also our Customers reporting this problem since 8th of September.

BR
  •  
alainrussell is currently offline alainrussell

Messages: 84
IP: 210.48.103.106
Karma: 3
We're seeing the same issue since last week - both iOS10 & iOS11 devices, various models.
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PavelBruj is currently offline PavelBruj

Messages: 21
IP: 77.236.196.59
Karma: 2
I am happy not to be the one who facing this issue.

Is there anyone from Kerio support team who should fix that?
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12Sync_de is currently offline 12Sync_de

Messages: 16

IP: 80.152.52.236
Karma: 0
hopefully some one <_at_>Kerio is looking at this issue.

Please do not hesitate to ask if you need more informations e.g. log files etc. from us.

As far as I can see in the log files there is nothing pointing to the imap Push an problem.
  •  
PavelBruj is currently offline PavelBruj

Messages: 21
IP: 77.236.196.59
Karma: 2
I just received information from our IT guy that new version 9.2.6 is available. Will try today evening switch to this version and see if will help.

Will keep you updated..
  •  
freakinvibe is currently offline freakinvibe

Messages: 1560
IP: 178.197.239.240
Karma: 63
Currently, the Kerio page still shows 9.2.4 as the latest version.

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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PavelBruj is currently offline PavelBruj

Messages: 21
IP: 46.254.70.221
Karma: 2
Updated to 9.2.6 and still get the same issue..
12Sync_de is currently offline 12Sync_de

Messages: 16

IP: 84.133.51.49
Karma: 0
as <_at_>Pavel Dobry (Kerio) metioned above: IMAP Push is using Apple APNs...
my experience tells me the certificates that Kerio uses for this are no longer valid.
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